首页
登录
职称英语
Acid rain, which is a form of air pollution, currently becomes a subject of
Acid rain, which is a form of air pollution, currently becomes a subject of
游客
2023-07-02
57
管理
问题
Acid rain, which is a form of air pollution, currently becomes a subject of great debate because of widespread environmental damage for which it has been blamed. It forms when oxides of sulfur(硫)and nitrogen(氮)combine with atmospheric moisture to yield sulfuric and nitric acids, which may then be carried long distances from their source before they drop in the form of rain. The pollution may also take the form of snow or fog or fall down in dry forms. In fact, although the term "acid rain" has been in use for more than a century — it is derived from atmospheric studies that were made in the region of Manchester, England — the more accurate scientific term would be "acid deposition". The dry form of such deposition is just as damaging to the environment as the liquid form.
The problem of acid rain originated with the Industrial Revolution, and it has been growing ever since. The severity of its effects has long been recognized in local settings, as exemplified by the spells of acid smog in heavily industrialized areas. The widespread destructiveness of acid rain, however, has become evident only in recent decades. One large area that has been studied extensively is northern Europe, where acid rain has eroded structures, injured crops and forests, and threatened life in freshwater lakes. In 1984, for example, environmental reports indicated that almost half of the trees in Germany’s Black Forest had been damaged by acid rain. The northeastern United States and eastern Canada have also been particularly affected by this form of pollution. Damage has also been detected in other areas of these countries and other regions of the world.
Industrial emissions have been blamed as the major cause of acid rain. Because the chemical reactions involved in the production of acid rain in the atmosphere are complex and as yet little understood, industries have tended to challenge such assessments and to stress the need for further studies and because of the cost of pollution reduction, governments have tended to support this attitude. Studies released by the USA government in the early 1980s, however, strongly indicated industries as the main source of acid rain, in the eastern USA and Canada. [br] From the first sentence of the passage, we learn that______.
选项
A、acid rain has caused air pollution
B、acid rain has caused widespread environmental damage
C、acid rain has become a much-studied subject
D、acid rain travels in all directions before it rains down
答案
B
解析
推理题。文章第一句意思是“酸雨是一种空气污染,由于它所造成的广泛的环境破坏,目前它已成为了激烈争议的话题。”由此可以得出结论:酸雨给环境带来了大面积的破坏。而A项“酸雨引起空气污染”,这与原文酸雨本身是一种空气污染有出入。C项“酸雨成为人们广泛研究的课题”,并不能从第一句中推测出来,讨论的话题不等于研究的课题。D项“酸雨落到地面上之前四处运动”,也是无法从第一句中推测出来的。只有B项has caused widespread environmental damage是符合原意的。故答案为B项。
转载请注明原文地址:https://tihaiku.com/zcyy/2800310.html
相关试题推荐
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
Today’slectureisonthesubjectofPronunciationAchievementFactors.
Today’slectureisonthesubjectofPronunciationAchievementFactors.
Today’slectureisonthesubjectofPronunciationAchievementFactors.
Today’slectureisonthesubjectofPronunciationAchievementFactors.
Today’slectureisonthesubjectofPronunciationAchievementFactors.
随机试题
Formakeadobebricks,workersmixsandandclayormudwithwaterandsmallqua
若在一个IPv4网络中一共划分了15个VLAN,则该网络中__()_。A.
Thechangeinthatvillagewasmiraculou
(2016年5月)从薪酬的实质而言,薪酬关系是一种()。A.约定关系 B.交
怎样将带小数的八进制数转换成二进制数?并完成选择题:将八进制数67.721转换成
(2013年)某改扩建工程项目位于重要生态敏感区,在其原厂界范围内改建面积6km
男,45岁。8个月前骑电动车时摔倒,腹部被车把撞伤并疼痛。经治疗后缓解,6个月前
患者,女,49岁。发现右乳外上象限无痛、单发、质硬、边界欠清的肿块,最常见的疾病
80岁男性,突然出现头痛、呕吐、意识不清,血压27/16kPa,右侧瞳孔大,左侧
14岁男孩,因腹痛来院就诊。查体:双下肢出现对称性片状小出血点,尿常规发现血尿(
最新回复
(
0
)